Table 4.
Conditional Probabilities (Loadings) From Four Cluster Latent Class Model (N=639)
| Symptom Measure | Cluster-1 Negatives (27.1%) |
Cluster-2 Mild (34.6%) |
Cluster-3 Moderate (18.1%) |
Cluster-4 Severe (20.1%) |
|---|---|---|---|---|
| Failure to fulfill major role obligations | .0041 | .0977 | .3109 | .8266 |
| Situations in which it is physically hazardous | .2633 | .5105 | .5124 | .8398 |
| Substance-related legal problems | .0001 | .0023 | .1662 | .0716 |
| Problems with family | .0160 | .0003 | .4915 | .6230 |
| Problems with friends | .0430 | .0071 | .3968 | .4350 |
| Problems with people at school/work | .0064 | .0002 | .2131 | .3740 |
| Problems w fighting | .0306 | .0000 | .0316 | .0546 |
| Continued use despite social or interpersonal problems | .0176 | .0003 | .7934 | .6984 |
| Tolerance symptoms | .1972 | .4544 | .6175 | .8685 |
| Withdrawal behavioral | .4945 | .9171 | .8615 | .9996 |
| Withdrawal somatic | .2045 | .5892 | .4852 | .9094 |
| Withdrawal neurological | .1150 | .5911 | .5648 | .9471 |
| Continued use despite withdrawal symptoms | .0108 | .0854 | .1737 | .3894 |
| Taken in large amounts | .0887 | .4024 | .5472 | .8174 |
| Desire or efforts to cut down | .0060 | .0842 | .1685 | .5425 |
| Time spent to obtain drug or recover from effects | .1832 | .5199 | .7198 | .9701 |
| Important activities given up or reduced | .0089 | .1181 | .3003 | .7735 |
| Physical health problems – somatic | .5678 | .9703 | .9350 | .9997 |
| Physical health problems – neurological | .2151 | .7102 | .6297 | .9376 |
| Physical health problems – non specific | .0344 | .2781 | .3118 | .5936 |
| Continued use despite physical health problems | .4487 | .9288 | .8174 | .9877 |
| Emotional/psychological problems – mood | .4087 | .8842 | .8369 | .9995 |
| Emotional/psychological problems – thought disorder | .3844 | .9032 | .7618 | .9740 |
| Continued use despite emotional & psychological problems | .4205 | .9150 | .8554 | .9995 |